44087440 has 20 divisors (see below), whose sum is σ = 102503484. Its totient is φ = 17634944.

The previous prime is 44087431. The next prime is 44087441. The reversal of 44087440 is 4478044.

It can be written as a sum of positive squares in 2 ways, for example, as 34152336 + 9935104 = 5844^2 + 3152^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (44087441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275467 + ... + 275626.

Almost surely, 2^44087440 is an apocalyptic number.

44087440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44087440 is an abundant number, since it is smaller than the sum of its proper divisors (58416044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44087440 is a wasteful number, since it uses less digits than its factorization.

44087440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551106 (or 551100 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 44087440 is about 6639.8373474054. The cubic root of 44087440 is about 353.2685376218.

The spelling of 44087440 in words is "forty-four million, eighty-seven thousand, four hundred forty".